D/A for controlling an oscillator in a phase locked loop

摘要

PCT No. PCT/US93/11996 Sec. 371 Date Jun. 4, 1996 Sec. 102(e) Date Jun. 4, 1996 PCT Filed Dec. 8, 1993 PCT Pub. No. WO95/16309 PCT Pub. Date Jun. 15, 1996A phase-lock-loop circuit includes a digital-to-analog converter of the bit rate multiplier type. The input word to the converter is updated once each horizontal period of a television signal. Phase information contained in an output signal of the bit rate multiplier is obtained in one horizontal period and is retained for affecting the phase in the immediately following horizontal period.